Rubber roll or ring.



No. 800,000. RATRNTRD A005111; 1908.

. J. R. RORSYTR. RUBBER ROLL4 0R RING.

APPLICATION FILED JULY 3.1905.

.Tov all whom .it may-concern:

UNrTED .srArEsrn JAMES BENNETT. roRsYTH, or BOSTON., 'Massiicnuserre;I", .5

RUBBER ROLL on RING.

Be itknown-.'thatll, JAMES BENNETT FoR'sYfrn,v of Boston, countyfoiSufolk, in vthe State of Massachusetts, have invented a new' and useful Rubber Roll orl Ring, of Which the .followin-g is a specification. My invention relates primarily to sectional Y rollers. which are usually made by putting a number of rings, or sections on` to a metal body or'shell,. and securing them by pressure between end clamping rings of metal.' .These rings, or sections are'usually'made of rubber,

'orsome'such .resilientmaterial In order A on the body, resulting in relative motion between the rings-or sections-'and the body, Vand consequent deterioration 'and inerliciency of theroller. This is especially true when the roller is softand elastic as in such- `cases itis not `possible to compound and `vulcanize the rubber-rings to be firm'enough to possess .the required strength and still retain the elasticity desired.

In the roller described by me 1n Patent .No.' 732728 of July 7th., -i903, duck is used to reinforce the rubber rings, and -les'sen'the tendency of the 'rings to stretch, and the .rubberon' the inside is harder than on the outsidefor the same purpose. Other Ways 'ofV reinforcing the rubber have'been used but they 'are objectionable for severalreaso'ns.

For example, if each rubber ring is vulcanized onto a'inetal hub as a tire, andthe hubs,

with.' their rubber coverings are -then assembled -ona shaft, and.; pressed between end clamping rings, 'the lit of the sections or on the shaft is iron to iron, which is an unfortunate arrangement., because all such rolleis should be interchangeable, as to their vvparts, and a little Wear or a little rust inside 'of the metal part may4 mean dilculty in assembling the parts, or taking the roller apart, or may mean that the sections when put on the'shaft will befloose' and make a roller-ivhichl is rickety. This 'is still further Specification of Letters Patenl.:v Application fried July 3, 1905. serial N6. 268,112.

a disadvantage, becauselitliese nietalhiibs must carry keys to revent tlieirturning on the shaft, Which `urthe'r complicates the dllliculties, and such metalrings are liable tol rust in place, so they'canxonlybeiremoved With difficulty. 'n lf tg.;

ln all the above methods,"itaarollergis eenstructed. to be soft and very resilientyhe rubber rings will stretch more lo'r less when the roller is subjected to lheavy service, ,Such

Patented `A y v @Normen as s'queezing thick uneven.masses, A under heavy pressure, and- .will lget:zlooseigoirthe core, res' of the rlier.-

y `T he object of my inventionis to, overeen-1e info rcing the rings of a; sectional rollerwith ulting in the short life andusefulness these diliculties anddisadvantages by'so re-l i -pieces of metal7 hard rubber, hard liber' or otherr 'suitable material, that while they AAcan Y be made soft and resilient,:yet' they irill beso strong on the inside 'next tofthe iron body that the tendency ci the rings to, stretch, and

get loose on the bodvwill bepractically,donc' away vwith, and-at the-sametime'the 'sirnplicity of construction vandwth'e sn n iiniber of parts,`wh1ch 1s, a characteristic, oilily roller, as desc'r1bed 1n my' above mentioned patent, is retained, and `-thisis animpor'tan-t eature' since it mayl .be desirable to '3lako apart such rollers and put {allein-together Qccasionally to repair the injurytof'itlie cover-` ing.,di1eto the wear and tearof service, and my-inventi'onconsists in a section vof a sec'- tional rubber covered rollcomprising'arnb# ber ring reinforced by metal,.,hardfru'b'ber orf the like, inserted in thel rubberring 'atjits' inner portion and. made T-s'hap'ed in crQss ,sec-

tion to give a' broad bearingsnrface at` the outside and rubberengaging shoulders at the 1ns 1de.

.g In the accompanying drawiings'jFigilre 1 A1s an elevation o a ring embodying myrnrenf tion; Fig. 2 is 'an elevation'foi theprefered' form oi metal reinforcing-ring; Fig. 3 is ascetion on llne 3-`3 of'Flg. 1';A Fig. 411s similar section showlng two metal ringsfand, the duck insertion above vreferred to'f; `Fig. isl ai svetion on line v5.*5 of Fig. 2; Fig. (ifisiil'ifel vation, .partly in section, slir'nving 'tlrl'ii'ligs assembledonthe core.f 'l

Rings'A'of rubber ortlie likeh-a 's A ways a e and iit over core Bi'ii'hic'li'hnsfkeys l) yb and journals b b', the kcysb :b litting and filling the key ways-a a. Nuts D D are attached to the core and act as clamps when screwed up.

E E are layers of duck or the like inserted in the rubber rings and e e are similar narrower layers.

The above parts are substantially the same' as those shown in my patent above' referred to with the exception of the'rubber rings which are made to receive metal reinforcing pieces F F, such pieces being preferably"-in the form of rings asshown. v 1

The reinforcing ri-ngs shown in Figs. 2 and 5. are preferably made of malleable metal, and when used in rollers whose bodies have longitudinal ribs, they have recesses corresponding to the ribs on the core. These metal rings may be either tight or loose fit on the body; in the latter case where the rings are of loose fit on the core, when they are molded in the rubber rings, they are completely inclosed by the rubber, and there is nothing about' the outside appearance of the rings to indicate that there are any metal rings in the sections. The fit of these secis, therefore, in this case,

. not metal to metal, but rubber to metal, the

'rubber sections, to be vent any such turning vof tion, vemploy a ring of'any other convenient'cross small amount of give in the rubber being sufficient to insure a snug fit, even if the body happened to be rusty or happened to be a trifle large or a trifle small. These reinforcing rings greatly reinforce, or strengthen the key-ways in the rubber, and absolutely prethe rubber rings about the metal body as .might occur if the above duck insertion alone were used.

1 do not limit myself to rings of cross secas indicated by Figs. 2 and 5, as 1 may section, and it is not absolutely necessary that recesses be provided in the metal rings, in f act when such metal rings are put into ut on a metal body that has no ribs, then t ie metal rings would obviously have no recesses in them. l prefer to make these metal rings with holes,i cavities, ribs, projections, etc., as shown by Figs. 2 and 5, so that they on the rubber, inde endent of any adhesion of rubber to metal ue to vulcanization, but in 'addition to this to these metal or other rings by the process of vulcanization, that the union which binds the metal or other rin s tothe rubber rings, in which they are inc osed, is very much greater than the bond between the metal rings and the rubber rings, when the metal rings are simply put in between the rubber rings and clamped there. These metal rings are put inside the rubber rings near the core and they do not extend far enough toward the outside of the rubber toiiit'efivfere at all with the outside cushiomng caused by heavy service.

would have a firm gripy the rubber is firmly united as 1s wellknown in the art, so

seance,

properties ofthe roller. In'shortl the effect of my reinforcing piecesis to greatly strengthen the innerV portion of the rubber rings, without affecting the cushion of the surface, and the resulting rollersection has the properties of a rubber ring so constructed that its inner portion while 1t has enough elastici-ty to make a snug fit on the core, yet has great strength and firmness to maintain 'its iirin grip when clamped upon the core, and overcome the stretching and loosening tendency These rubber rings may be thus made with a great amount of elasticity, opt detracting from the strength and firmness o the inside portion of the rings.

It will be observed that my ring of metal being T-shaped in cross section`V rovides a large bearing surface at the outsidiJ and provides shoulders at the inside of the rim of the or resiliency on the surface, withmetal ring so that the roll isreinforced bv material which gives strength but which wi l not cutinto or harm the rubber.

While 1 have shown layers of duck inserted to ive strength to the inner portion of the rub er ring and suchlayers are desirable in addition to my new metal, or other hard insertion, yet my invention consists in the discovery that a ring of metal or other hard material T-shaped in cross-section to rovide a radial web and an enlarged rim wi er than the web and thereby give a broad bearing surface at the outside of the rim and rubberengaging shoulders at the inside of the rim, can be availed of in' rubber or similar rolls without in any way interfering with those attributes of the rubber ring whichare essential to adapt it for use in a rubber roller or for any other purpose for which it may be found useful as it is evident that my new reinforced ring will be found useful for other purposes besides rollers.

What l claim is:

1. An article of the character described ycomprisingaring of rubber and a ring of metal the former being formed around the latter which is T-shap/ed in cross-section to' provide a radial web and an enlarged rim wider than theweb to give a broad caring surface at the outside of the rim and rubberengaging shoulders at the inside ofthe rim.

2. An article of the character described comprisingl a ring of rubber and a ring of metal the former being formed around the latter which -is T-sha ed in cross-section to provide a radial we having perforations through which the rubber extends to bind metal and rubber together and to provide an enlarged rim wider than the web to give a broad bearing surface at the outside of the rim and rub er-engaging shoulders at the inside of the rim.

3. "An article of t e 'character described pmprising a of rubber aundh-a. ring of surface at the outside of the rim rubbermetal the former-being formed areund thel lengaging shoulders at the nsidegofthe rim.

latter which is --'IT-shaped in cross-section to r f provide a-radiaI-Web havin leteralwings'te .JAMES FORS TH preventturning ofthe rub'e with relation I Witnesses: to the metal and to prpvide ail enlal" ed rim R. B. ADAMS, v

,wider than. the web to give a broad .eaing G. AfRr'ooKWELL. 

